ATM (was Re: too many routes)

Susan R. Harris wrote:

> Photons propagate at 0.65c in fibre - the exact speed does vary
> depending on whether its single or multimode fibre.

Hi Geoff - not to reveal my ignorance or anything, but ... is that 65
degrees celcius?

> The equivalent EMR propagation speed in coppr is 0.75c

What is EMR?

Electro-Magnetic Radiation.

The velocity will vary +/- ~10% depending on the type of material for the
dielectric and dimension of the transmission line.